Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 85
Filtrar
1.
Vasc Endovascular Surg ; : 15385744211068614, 2022 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-34978227

RESUMO

A 34-year-old patient underwent liver transplantation for progressive hepatic failure in the setting of congenital hepatic fibrosis. In past medical history, the patient had undergone splenectomy with proximal Linton's splenorenal surgical shunt creation for symptomatic portal hypertension with hypersplenism. The patient developed an early allograft dysfunction, with radiologic evidence of a reduced portal flow associated to portal steal from the patent surgical shunt. The patient was successfully treated through endovascular placement of a 30 mm Amplatzer cardiac plug at the origin of the splenic vein.

2.
Exp Clin Transplant ; 2021 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-34775944

RESUMO

We report a rare variant of the hepatic arterial supply observed during liver procurement from a 71-year-old female donor for whom an ischemic stroke caused brain death. Preoperative computed tomography showed a partially obliterated celiac trunk and an atypical arterial branch that coursed in a retropancreatic plane away from its origin at the superior mesenteric artery to anastomose with the common hepatic artery at the origin of the proper hepatic artery. The gastroduodenal artery and the dorsal pancreatic artery are the 2 conventional anastomotic arcades between the celiac trunk and the superior mesenteric artery. However, another potential anastomotic route is a rare physiological phenomenon known as the arc of Bühler, which, if present, connects the superior mesenteric artery with the celiac trunk or one of its branches. Although the arc of Bühler is known to occur in less than 3% of the general population, it could serve as a crucial anastomotic option in the case of median arcuate ligament syndrome or atheromatous obliteration of the celiac trunk. In our case, we were able to dissect and preserve the entire anastomotic arc from the donor. For arterial reconstruction during liver transplant, we anastomosed the arc of Bühler to the recipient's hepatic artery at the origin of the gastroduodenal artery. The postoperative course was uneventful, and the recipient was in good health at the 6-month follow-up. The arc of Bühler, when present, is an important anastomotic option in hepatobiliary surgery to avoid potential damage to the arterial supply of the liver.

5.
Cancers (Basel) ; 13(15)2021 Jul 21.
Artigo em Inglês | MEDLINE | ID: mdl-34359560

RESUMO

Cholangiocarcinoma accounts for approximately 10% of all hepatobiliary tumors and represents 3% of all new-diagnosed malignancies worldwide. Intrahepatic cholangiocarcinoma (i-CCA) accounts for 10% of all cases, perihilar (h-CCA) cholangiocarcinoma represents two-thirds of the cases, while distal cholangiocarcinoma accounts for the remaining quarter. Originally described by Klatskin in 1965, h-CCA represents one of the most challenging tumors for hepatobiliary surgeons, mainly because of the anatomical vascular relationships of the biliary confluence at the hepatic hilum. Surgery is the only curative option, with the goal of a radical, margin-negative (R0) tumor resection. Continuous efforts have been made by hepatobiliary surgeons in order to achieve R0 resections, leading to the progressive development of aggressive approaches that include extended hepatectomies, associating liver partition, and portal vein ligation for staged hepatectomy, pre-operative portal vein embolization, and vascular resections. i-CCA is an aggressive biliary cancer that arises from the biliary epithelium proximal to the second-degree bile ducts. The incidence of i-CCA is dramatically increasing worldwide, and surgical resection is the only potentially curative therapy. An aggressive surgical approach, including extended liver resection and vascular reconstruction, and a greater application of systemic therapy and locoregional treatments could lead to an increase in the resection rate and the overall survival in selected i-CCA patients. Improvements achieved over the last two decades and the encouraging results recently reported have led to liver transplantation now being considered an appropriate indication for CCA patients.

7.
Transpl Int ; 34(9): 1712-1721, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34448275

RESUMO

Although the diagnostic value of Liver Imaging Reporting and Data System (LI-RADS) protocol is well recognized in clinical practice, its role in liver transplant (LT) setting is under-explored. We sought to evaluate the oncological impact of LI-RADS classification applied to Metroticket 2.0 calculator in a single-centre retrospective cohort of transplanted hepatocellular carcinoma (HCC) patients, exploring which LI-RADS subclasses need to be considered in order to grant the best Metroticket 2.0 performance. The most recent pre-LT imaging of 245 patients undergoing LT for HCC between 2005 and 2015 was retrospectively and blindly reviewed, classifying all nodules according to LI-RADS protocol. Metroticket 2.0 accuracy was subsequently tested incorporating all vital nodules identified during multi-disciplinary team (MDT) meetings attended before LI-RADS reclassification of the latest pre-LT imaging, LR-5 and LR-treatment-viable (LR-TR-V), LR-4/5 and LR-TR-V, and LR-3/4/5 and LR-TR-V nodules respectively. Considering their extremely low probability for harbouring HCC, LR-1 and LR-2 nodules were not considered in this analysis. Incorporation of all HCCs identified during MDT meetings attended before LI-RADS reclassification of the latest pre-LT imaging resulted in a Metroticket 2.0 c-index of 0.72, [95% confidence interval (CI) 0.64-0.80]. Metroticket 2.0 c-index dropped to 0.60 [95% CI: 0.48-0.72] when LI-RADS-5 and LI-RADS-TR-V (P = 0.0089) or LI-RADS-5, LI-RADS-4 and LI-RADS-TR-V (P = 0.0068) nodules were entered in the calculator. Conversely, addition of LI-RADS-3 HCCs raised the Metroticket 2.0 c-index to 0.65 [95% CI: 0.54-0.86], resulting in a not statistically significant diversion from the original performance (0.72 vs. 0.65; P = 0.08). Exclusion of LR-3 and LR-4 nodules from Metroticket 2.0 calculator resulted in a significant drop in its accuracy. Every nodule with an intermediate-to-high probability of harbouring HCC according to LI-RADS protocol seems to contribute to tumour burden and should be entered in the Metroticket 2.0 calculator in order to grant appropriate performance.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Transplante de Fígado , Carcinoma Hepatocelular/diagnóstico por imagem , Carcinoma Hepatocelular/cirurgia , Meios de Contraste , Humanos , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/cirurgia , Imageamento por Ressonância Magnética , Estudos Retrospectivos , Sensibilidade e Especificidade , Tomografia Computadorizada por Raios X
8.
Artigo em Inglês | MEDLINE | ID: mdl-34291591

RESUMO

BACKGROUND: The benefits of pure laparoscopic and robot-assisted liver resections (LLR and RALR) are known in comparison to open surgery. The aim of the present retrospective comparative study is to investigate the role of RALR and LLR according to different levels of difficulty. METHODS: The institutional databases of six high-volume hepatobiliary centers were retrospectively reviewed. The study population was divided in two groups: LLR and RALR. The procedures were stratified for difficulty levels accordingly to three classifications. A propensity score matching was implemented to mitigate selection bias. Short-term outcomes were the object of comparison. RESULTS: Nine hundred and thirty-six LLR and 403 RALR were collected. RALR exhibited fewer cases of intraoperative blood loss, lower transfusion and conversion rates (especially for oncological radicality) than LLR in the setting of highly difficult operations, whereas LLR had lower postoperative morbidity and fewer low-grade complications. For intermediate and low-difficulty resections, the intraoperative advantages of RALR gradually decreased to nonsignificant results and LLR remained associated with lower postoperative morbidity. CONCLUSION: Robot-assisted liver resections do not show operative nor clinically significant benefits over LLR for low- and intermediate-difficulty resections. By reducing conversion rates, RALR can favour the operative feasibility of difficult resections possibly extending the indications of minimally invasive approaches for liver resection.

11.
Transpl Int ; 34(10): 1948-1958, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34145653

RESUMO

The impact of donor age on the recurrence of hepatocellular carcinoma (HCC) after liver transplantation is still debated. Between 2002 and 2014, all patients transplanted for HCC in 2 European liver transplantation tertiary centres were retrospectively reviewed. Risk factors for HCC recurrence were assessed using competing risk analysis, and the impact of donor age < or ≥65 years and < or ≥80 years was specifically evaluated after propensity score matching. 728 patients transplanted with a median follow-up of 86 months were analysed. The 1-, 3- and 5-year recurrence rates were 4.9%, 10.7% and 13.9%, respectively. In multivariable analysis, recipient age (sHR: 0.96 [0.93; 0.98], P < 0.01), number of lesions (sHR: 1.05 [1.04; 1.06], P < 0.001), maximum size of the lesions (sHR: 1.37 [1.27; 1.48], P < 0.01), presence of a hepatocholangiocarcinoma (sHR: 6.47 [2.91; 14.38], P < 0.01) and microvascular invasion (sHR: 3.48 [2.42; 5.02], P < 0.01) were significantly associated with HCC recurrence. After propensity score matching, neither donor age ≥65 (P = 0.29) nor donor age ≥80 (P = 0.84) years increased the risk of HCC recurrence. In conclusion, donor age was not found to be a risk factor for HCC recurrence. Patients listed for HCC can receive a graft from an elderly donor without compromising the outcome.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Transplante de Fígado , Idoso , Carcinoma Hepatocelular/etiologia , Humanos , Lactente , Neoplasias Hepáticas/etiologia , Transplante de Fígado/efeitos adversos , Doadores Vivos , Recidiva Local de Neoplasia/epidemiologia , Estudos Retrospectivos , Medição de Risco , Fatores de Risco
13.
Updates Surg ; 73(4): 1381-1389, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33792888

RESUMO

There is enough clinical evidence that a T-tube use in biliary reconstruction at adult liver transplantation (LT) does not significantly modify the risk of biliary stricture/leak, and it may even sustain infective and metabolic complications. Thus, the policy on T-tube use has been globally changing, with progressive application of more restrictive selection criteria. However, there are no currently standardized indications in such change, and many LT Centers rely only on own experience and routine. A nation-wide survey was conducted among all the 20 Italian adult LT Centers to investigate the current policy on T-tube use. It was found that 20% of Centers completely discontinued the T-tube use, while 25% Centers used it routinely in all LT cases. The remaining 55% of Centers applied a selective policy, based on criteria of technical complexity of biliary reconstruction (72.7%), followed by low-quality graft (63.6%) and high-risk recipient (36.4%). A T-tube use > 50% of annual caseload was not associated with high-volume Center status (> 70 LT per year), an active pediatric or living-donor transplant program, or use of DCD grafts. Only 10/20 (50%) Centers identified T-tube as a potential risk factor for complications other than biliary stricture/leak. In these cases, the suspected pathogenic mechanism comprised bacterial colonization (70%), malabsorption (70%), interruption of the entero-hepatic bile-acid cycle (50%), biliary inflammation due to an indwelling catheter (40%) and gut microbiota changes (40%). In conclusion, the prevalence of T-tube use among the Italian LT Centers is still relatively high, compared to the European trend (33%), and the potential detrimental effect of T-tube, beyond biliary stricture/leak, seems to be somehow underestimated.


Assuntos
Transplante de Fígado , Adulto , Criança , Hábitos , Humanos , Itália/epidemiologia , Doadores Vivos , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos , Fatores de Risco
14.
Exp Clin Transplant ; 19(5): 493-496, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33797358

RESUMO

Organ shortage is one of the major limitations in the field of liver transplantation, which has led to the consideration of extended criteria donors as a way to expand the donor pool. The use of extended criteria donors in cases of high Model for End-Stage Liver Disease scores or urgent recipients could be complicated by increased postoperative mortality. Donors on left ventricular assist devices could be considered extended criteria donors because of the mechanical circulatory support itself and the potential of chronic liver damage due to right ventricular failure, but experiences in the literature are limited. Here, we report the first case of an urgent liver retransplant procured from a left ventricular assist device donor.

15.
Cancers (Basel) ; 13(7)2021 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-33916311

RESUMO

Background: Single hepatocellular carcinoma (HCC) benefits from surgical resection (SR) or US-guided percutaneous ablation (PA), although the best approach is still debated. We evaluated the impact of Li-RADS classification on the oncological outcomes of SR vs. PA as single HCC first-line treatment. Methods: We retrospectively and blindly classified treatment-naïve single HCC that underwent SR or PA between 2010 and 2016 according to Li-RADS protocol. Overall survival (OS), recurrence free survival (RFS) and local recurrence after SR and PA were compared for each Li-RADS subclass before and after propensity-score matching (PS-M). Results: Considering the general population, SR showed better 5-year OS (68.3% vs. 52.2%; p = 0.049) and RFS (42.5% vs. 29.8%; p = 0.002), with lower incidence of local recurrence (8.2% vs. 44.4%; p < 0.001), despite a significantly higher frequency of clinically-relevant complications (12.8% vs. 1.9%; p = 0.002) and a higher Comprehensive Complication Index (12.1 vs. 2.2; p < 0.001). Focusing on different Li-RADS subclasses, we highlighted better 5-year OS (67.1% vs. 46.2%; p = 0.035), RFS (45.0% vs. 27.0% RFS; p < 0.001) and lower incidence of local recurrence (9.7% vs. 48.6%; p < 0.001) after SR for Li-RADS-5 HCCs, while these outcomes did not differ for Li-RADS-3/4 subclasses; such results were confirmed after PS-M. Conclusions: Our analysis suggests a potential prognostic role of Li-RADS classification, supporting SR over PA especially for Li-RADS-5 single HCC.

18.
World J Gastroenterol ; 27(10): 928-938, 2021 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-33776364

RESUMO

The coronavirus disease 2019 (COVID-19) pandemic has upended healthcare systems worldwide and led to an inevitable decrease in liver transplantation (LT) activity. During the first pandemic wave, administrators and clinicians were obliged to make the difficult decision of whether to suspend or continue a life-saving procedure based on the scarce available evidence regarding the risk of transmission and mortality in immunosuppressed patients. Those centers where the activity continued or was heavily restricted were obliged to screen donors and recipients, design COVID-safe clinical pathways, and promote telehealth to prevent nosocomial transmission. Despite the ever-growing literature on COVID-19, the amount of high-quality literature on LT remains limited. This review will provide an updated view of the impact of the pandemic on LT programs worldwide. Donor and recipient screening, strategies for waitlist prioritization, and posttransplant risk of infection and mortality are discussed. Moreover, a particular focus is given to the possibility of donor-to-recipient transmission and immunosuppression management in COVID-positive recipients.


Assuntos
COVID-19/epidemiologia , Transplante de Fígado/tendências , Obtenção de Tecidos e Órgãos/tendências , COVID-19/diagnóstico , COVID-19/transmissão , Transmissão de Doença Infecciosa/prevenção & controle , Doença Enxerto-Hospedeiro/prevenção & controle , Alocação de Recursos para a Atenção à Saúde , Humanos , Imunossupressores/uso terapêutico , Programas de Rastreamento , SARS-CoV-2 , Transplantes/virologia
19.
Transplantation ; 105(11): 2385-2396, 2021 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-33617211

RESUMO

BACKGROUND: Donation after circulatory death (DCD) in Italy, given its 20-min stand-off period, provides a unique bench test for normothermic regional perfusion (NRP) and dual hypothermic oxygenated machine perfusion (D-HOPE). METHODS: We coordinated a multicenter retrospective Italian cohort study with 44 controlled DCD donors, who underwent NRP, to present transplant characteristics and results. To rank our results according to the high donor risk, we matched and compared a subgroup of 37 controlled DCD livers, preserved with NRP and D-HOPE, with static-preserved controlled DCD transplants from an established European program. RESULTS: In the Italian cohort, D-HOPE was used in 84% of cases, and the primary nonfunction rate was 5%. Compared with the matched comparator group, the NRP + D-HOPE group showed a lower incidence of moderate and severe acute kidney injury (stage 2: 8% versus 27% and stage 3: 3% versus 27%; P = 0.001). Ischemic cholangiopathy remained low (2-y proportion free: 97% versus 92%; P = 0.317), despite the high-risk profile resulting from the longer donor warm ischemia in Italy (40 versus 18 min; P < 0.001). CONCLUSIONS: These data suggest that NRP and D-HOPE yield good results in DCD livers with prolonged warm ischemia.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...